The basic idea for the prototype of the Kraftform handle – that the hand should dictate the design – has, right through to today, proved to be correct. In cooperation with the internationally recognised Fraunhofer IAO Institute, Wera developed a screwdriver handle designed to match the shape of the human hand as long ago as the 1960s. After a long development phase, the Wera Kraftform handle was launched to the market in 1968. It has been optimised through the years with new technologies, but has kept its proven shape. After all, the human hand has not changed either.
391 Hose clamp screwdriver
- Hose clamp screwdriver for hexagon head screws
- Multi-component Kraftform handle for fast and ergonomic screwdriving
- Hexagonal anti-roll feature against rolling away
- Flexible, circular blade
- Handle markings simplify finding and sorting of tools
Product features
Flexible shaft
Screwdriving can also be achieved “around the corner” with the screwdriver 392. The flexible shaft allows unfavourably-positioned screw fastenings to be reached. The ideal tool for difficult-to-access screwdriving applications e.g. in the engine compartment of a car.
Kraftform
Rapid hand repositioning
The hard materials used for the handle ensure rapid hand repositioning without any danger of the skin “sticking” to the handle. The surrounding hard zones with large diameters glide like wheels through the hand.
Large contact area
The large contact area – with particularly high friction to the soft zones – results in high torque transfer without any bruising from the edges.
Identification marking
The screw profile and tip size identification markings on the handle make it easier to find the right screwdriver in the tool case, or at the workplace.
Non-roll feature
The hexagonal non-roll feature prevents any rolling away at the workplace.
Product details
Facts and figures
Part number
05028148001
05028150001
05028152001
6
7
8
167
167
167
98
98
98
6 9/16"
6 9/16"
6 9/16"
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Product description
High quality hose clamp screwdriver by Wera. Multi-component Kraftform handle for high working speeds and particularly ergonomic screwdriving. Kraftform Plus: hard gripping zones for high working speeds whereas soft zones ensure high torque transfer. Flexible blade for reaching difficult-to-access places. Hexagonal anti-roll feature prevents any rolling away and handle markings make for simplified finding and sorting of the tool.
